Answer:
B=μ₀I/2r
Explanation:
Produced magnetic field due to an existing electric field through a coil or conductor can be explained by Biot-Savart Law. Formula for this law is:
dB=(μ₀I/4π.r²)dL
Here,
r=Radius of the loop
I and r are constants with respect to length L.
To convert linear displacement L into angular displacement Ф:
dL=r.dФ
So,
dB=(μ₀I/4π.r²)r.dФ
dB=(μ₀I/4π.r)dФ
Integrating both sides over the circle i.e. from 0 radians to 2π radians (360⁰), while the integration will apply only on dФ as all others are constants.
B=(μ₀I/4πr)(2π-0)
<u>B=(μ₀I/2r)</u>
Answer:
0.159 Tesla per second
Explanation:
r = 2 m, e = 2 V,
Let the rate of magnetic field changing is dB / dt.
By use of Farady's law of electromagnetic induction
e = rate of change of magnetic flux
e = dФ /dt
e = A x dB / dt
2 = 3.14 x 2 x 2 x dB / dt
dB / dt = 0.159 Tesla per second
False. Heat radiation from the sun cannot reach Earth, we cannot receive TV or GPS signals from satellites, and we cannot detect the light from distant stars.
Oh, wait . . .
